diff --git a/test/Polar_test.cc b/test/Polar_test.cc
index ebadeee..be83dd4 100644
--- a/test/Polar_test.cc
+++ b/test/Polar_test.cc
@@ -9,19 +9,19 @@
 
 TEST(Polar, FromVector2) {
   Vector2 v = Vector2(0, 1);
-  Polar p = Polar::Polar(v);
+  Polar p = Polar(v);
 
   EXPECT_FLOAT_EQ(p.distance, 1.0F) << "p.distance 0 1";
   EXPECT_FLOAT_EQ(p.angle, 0.0F) << "s.angle 0 0 1";
 
   v = Vector2(1, 0);
-  p = Polar::Polar(v);
+  p = Polar(v);
 
   EXPECT_FLOAT_EQ(p.distance, 1.0F) << "p.distance 1 0";
   EXPECT_FLOAT_EQ(p.angle, 90.0F) << "s.angle 1 0";
 
   v = Vector2(-1, 1);
-  p = Polar::Polar(v);
+  p = Polar(v);
 
   EXPECT_FLOAT_EQ(p.distance, sqrt(2.0F)) << "p.distance -1 1";
   EXPECT_NEAR(p.angle, -45.0F, 1.0e-05) << "s.angle -1 1";